Disclosed herein are novel compounds, pharmaceutical compositions comprising such compounds and related methods of their use. The compounds described herein are useful, e.g., as liposomal delivery vehicles to facilitate the delivery of encapsulated polynucleotides to target cells and subsequent iransfection of said target cells, and in certain embodiments are characterized as having one or more properties that afford such compounds advantages relative to other similarly classified lipids.

A method to prevent, inhibit or treat one or more symptoms associated with disease of the central nervous system by intranasally, intrathecally, intracerebrovascularly or intravenously administering a rAAV encoding a gene product associated with the disease, e.g., a mammal in which the gene product is absent or present at a reduced level relative to a mammal without the disease, in an amount effective, e.g., to provide for cross-correction.

The present disclosure is directed to methods of treating a steatosis-associated disorder by administering a therapeutic agent selected from a lysosomal enzyme, an autophagy-inducing agent, or a combination thereof. Steatosis-associated disorders discussed herein include GSD Ia, GSD Ib, GSD Ic, NAFLD, and NASH. Other embodiments are directed to methods of reversing steatosis, modulating autophagy, inducing autophagy, and reversing glycogen storage.

Provided herein are nucleic acid sequence encoding hIDUA and expression cassettes containing these coding sequences. Also provided are vectors, such as recombinant adeno-associated virus (rAAV) vectors having a vector genome including a hIDUA coding sequence operably linked regulatory sequences that direct expression of the hIDUA. Also provided are compositions containing these expression cassettes and rAAV vectors and methods of treating MPS1 or an associated syndrome such as Hurler, Hurler-Scheie and/or Scheie syndrome. The compositions and methods provided are further designed to selectively repress expression of hIDUA in dorsal root ganglia.

Provided herein are methods and compositions for treating a subject suffering from a deficiency in α-L-Iduronidase in the CNS. The methods include systemic administration of a bifunctional fusion antibody comprising an antibody to a human insulin receptor and an α-L-Iduronidase. A therapeutically effective systemic dose is based on the specific CNS uptake characteristics of human insulin receptor antibody-α-L-Iduronidase fusion antibodies as described herein.

Compositions and methods are described for the delivery of a fully human-glycosylated (HuGly) α-L-iduronidase (IDUA) to the cerebrospinal fluid of the central nervous system (CNS) of a human subject diagnosed with mucopolysaccharidosis I (MPS I).

The invention provides compositions and methods for treating MPS I.

Described herein are engineered nucleases comprising mutations in the cleavage domain (e.g., FokI or homologue thereof) and/or DNA binding domain (zinc finger protein, TALE, single guide RNA) such that on-target specificity is increased.

The present application relates to an LEAPER-based method for targeted editing of RNA, which comprises: safely and effectively performing adenosine-to-inosine RNA editing (A-to-I RNA editing) by LEAPER in vivo, thereby the pathogenic mutation sites can be accurately repaired, and all diseases caused by G>A mutations, such as MPS IH, can be treated.

The current invention involves the use of protein lectins produced by plants including the non-toxic carbohydrate binding subunits (B subunits) of plant “AB toxins” (PTB lectins) as delivery vehicles for mobilizing associated drug substances for delivery to animal and human cells. The resulting protein fusions or conjugates retain lectin carbohydrate specificity for binding to cells and cellular trafficking activity so as to deliver an associated drug compound to the site of disease manifestation. One embodiment of this invention concerns the ability of ricin toxin B subunit, as a model PTB lectin, to deliver enzyme replacement therapeutic drugs to cells of several organs of the body including the brain and central nervous system, eyes, ears, lungs, bone, heart, kidney, liver, and spleen for treating lysosomal diseases.